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Polyfill auxiliary values on XNU

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This commit is contained in:
Justine Tunney 2021-02-03 20:37:52 -08:00
parent a37960a3af
commit d934f38c99
6 changed files with 27 additions and 32 deletions
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24
libc/calls/getauxval.c
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@ -36,26 +36,10 @@ unsigned long getauxval(unsigned long at) {
if (at != -1) {
if (!IsWindows()) {
if (!g_auxv) return 0;
if (IsXnu()) {
if (at) {
const char *name =
at == AT_EXECFN ? "executable_path" : (const char *)at;
const char **auxv = (const char **)g_auxv;
unsigned namelen = strlen(name);
for (int i = 0; auxv[i]; ++i) {
if (strncmp(auxv[i], name, namelen) == 0 &&
auxv[i][namelen] == '=') {
res = (intptr_t)&auxv[i][namelen + 1];
break;
}
}
}
} else {
for (const unsigned long *ap = g_auxv; *ap; ap += 2) {
if (ap[0] == at) {
res = ap[1];
break;
}
for (const unsigned long *ap = g_auxv; *ap; ap += 2) {
if (ap[0] == at) {
res = ap[1];
break;
}
}
} else {